A military conflict broke out between Russia and Ukraine on February 23, and the Russian army launched a "special military operation" in Ukraine. The outbreak of the Russian-Ukraine conflict has complex reasons, mainly because of the continuous expansion of NATO . Once Ukraine also joins NATO, Russia's national security will face a serious impact. Russia had issued a warning to Ukraine as early as 2014. It was a signal that Crimean Peninsula joined the Russian Federation. Later, Lugansk and Donetsk in eastern Ukraine announced the establishment of a republic. Faced with changes in the eastern Ukraine region, Ukrainian security forces began military operations to combat militias in eastern Ukraine because eastern Ukraine was in war for a long time.

Russia-Ukraine conflict has heated up the contradiction between Russia and Ukraine. Now it has entered the tenth month of the Russian-Ukrainian conflict. The battle between Russia and Ukrainian troops has entered a stalemate. Judging from Russia's mobilization, Russia is gathering its strength to prepare for a new offensive. According to the news released by Russia, Russia has mobilized 300,000 troops. Just when the Russian-Ukraine conflict was in a stalemate, the Russian army caused trouble. According to Ukraine's announcement, when Russia used the drone to launch an attack, it made an error and blew up its own S300 air defense missile . From the "Z" sign on the S300 missile, it can be seen that it is Russian equipment.

During the Russian-Ukrainian conflict, the S300 air defense missile was an equipment used by both Russia and Ukraine. It is a long-range air defense system that uses a vertical launch module, so it has the ability to quickly engage in battle. Since October, the Russian army has used drones to launch attacks on a large scale, including using the "Witness" 136 suicide drone purchased from Iran, and also using the "Lancet" cruise missile developed by Russia. However, in actual use, there was still an error, resulting in the destruction of its own S300 air defense missile in the Khlsong area. Currently, the Russian army and the Ukrainian army are fighting each other in the Khlsong region.

Just after the Russian drone destroyed its S300 air defense missile, Russian-controlled Crimea sounded an air defense alarm. According to news released by Russian media, Ukraine launched a drone attack on Crimea. In the face of Ukraine's air strike, Russia launched a counterattack, and during this period it shot down two Ukrainian drones. Ukraine has repeatedly raided Crimea, and during this period it also hit the headquarters building of the Russian Black Sea Fleet. In addition to having the TB-2 "flag bearer" all-in-one drone, Ukraine also has other drone models, including suicide models improved from commercial drones. Ukraine has achieved many results in using drones.

Ukraine's use of drones to attack Crimea is a humiliation for Russia. Russia controlled Crimea as early as 2014. Ukraine dared to launch an attack on Russia's mainland and has ignored Russia's warning. In fact, Ukraine also "terrorist attacks" the Crimean Bridge , causing traffic interruption on the Crimean Bridge. When the Russian-Ukrainian conflict entered its 10th month, Ukraine still had a large number of drones available for raids, which also exposed the incompleteness of Russia's "special military operations". Ukraine could successfully obtain military assistance from the West, thus making Russia's military operations quite passive.
